file attributes
Standard C library (libc)
Used for some file attributes (e.g., file mode). It is an integer type.
POSIX.1-2008.
POSIX.1-2001.
The following headers also provide this type: <fcntl.h>, <ndbm.h>, <spawn.h>, <sys/ipc.h>, <sys/mman.h>, and <sys/stat.h>.